table.qr {
  border-width: 0;
  border-style: none;
  border-color: #0000ff;
  border-collapse: collapse;
  margin: 10px;

  td {
    border-left: solid 3px #000;
    padding: 0;
    margin: 0;
    width: 0px;
    height: 3px;
  }

  td.black { border-color: #000; }
  td.white { border-color: #fff; }
}
